[USN-1582-1] RubyGems vulnerabilities
tyhicks at canonical.com
Wed Sep 26 02:23:13 UTC 2012
Ubuntu Security Notice USN-1582-1
September 26, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
RubyGems could be made to download and install malicious gem files.
- rubygems: package management framework for Ruby libraries/applications
John Firebaugh discovered that the RubyGems remote gem fetcher did not properly
verify SSL certificates. A remote attacker could exploit this to perform a man
in the middle attack to alter gem files being downloaded for installation.
John Firebaugh discovered that the RubyGems remote gem fetcher allowed
redirection from HTTPS to HTTP. A remote attacker could exploit this to perform
a man in the middle attack to alter gem files being downloaded for
The problem can be corrected by updating your system to the following
Ubuntu 12.04 LTS:
In general, a standard system update will make all the necessary changes.
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